JP2009150173A - Fender and method for production thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fender having a shock receiving member of which the service life is easily known, and to provide a method for production thereof. <P>SOLUTION: This fender is composed of a rubber fender and the shock receiving member arranged in at least a part of an outside surface of the rubber fender. In the fender, the shock receiving member is composed of a plurality of layers, and the respective layers are respectively different colors. In the method for production of the fender, the rubber fender and the shock receiving member are integrated by vulcanization, and the rubber fender and the shock receiving member are integrated by a fixing member, and is desirably constituted so that an upper surface of the fixing member is positioned under an upper surface of the lowest layer of the shock receiving member. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fender having a receiving member whose life is easily understood, and a method for manufacturing the same.

  A fender is attached to the quay where the ship berths in order to absorb the impact on the hull and the like when the ship berths. As such a fender, there is known one having a rubber fender and a receiving member provided on at least a part of the outer surface of the rubber fender.

  The fender having such a configuration absorbs the impact at the time of berthing by the rubber fender, and the impact member is made of a low-friction resin such as ultrahigh molecular weight polyethylene, so that the ship is attached to the quay. During the mooring, the shear load generated between the hull and the fender can be relaxed by wave motion, loading of luggage, etc. (Patent Documents 1 to 3).

  However, while the fender is used, the receiving member wears. Furthermore, if the wear of the impact-receiving member of the fender progresses, the rubber fender will be exposed. When the fender is used in this state, the function of relieving the shear load of the fender is significantly reduced, and there is a risk of destruction of the fender, and as described in Patent Document 1, When the impact receiving member and the rubber fender are fixed by a fixing member, there is a risk of damaging the hull with the fixing member. Therefore, it is necessary to grasp the progress of wear of the impact receiving member so that the life of the fender can be easily understood.

JP-A-7-229129 JP-A-10-338924 Japanese Patent Laid-Open No. 11-93141

  Therefore, an object of the present invention is to provide a fender having an impact receiving member whose life is easily understood, and a method for manufacturing the same.

  As a result of intensive studies to achieve the above object, the inventor of the present invention, in a fender comprising a rubber fender and an impact receiving member provided on at least a part of the outer surface of the rubber fender, The present invention has been completed by finding that the impact receiving member is composed of a plurality of layers, and that each layer has a different color to provide a fender having an impact receiving member whose life is easily understood.

That is, the fender according to the present invention is a fender comprising a rubber fender and a receiving member provided on at least a part of the outer surface of the rubber fender.
The impact receiving member is composed of a plurality of layers, and each layer has a different color.

  The fender according to the present invention is preferably manufactured by integrating the rubber fender and the impact receiving member by vulcanization.

  Further, in the fender according to the present invention, the rubber fender and the receiving member are integrated by a fixing member so that the upper surface of the fixing member is located below the upper surface of the lowermost layer of the receiving member. It is preferable to construct and manufacture.

  According to the present invention, it is possible to provide a fender having a receiving member whose life is easily understood, and a method for manufacturing the fender.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of one embodiment of the fender according to the present invention, FIGS. 2 to 5 show an example of a method for manufacturing the impact receiving member according to the present invention, and FIG. 1 shows a cross-sectional view of an embodiment.

  As shown in FIG. 1, the fender 1 of the present invention is a fender comprising a rubber fender 3 and an impact receiving member 2 provided on at least a part of the outer surface of the rubber fender 3. The impact receiving member 2 includes a plurality of layers, and each layer has a different color. As described above, the fender 1 according to the present invention is configured such that the wear member 2 is composed of layers having different colors, so that the state of wear is easily made depending on the color of the exposed surface of the receiving portion 2. I can confirm. Therefore, for example, by attaching a specific color to a layer that requires replacement of the impact receiving member 2, the color of the impact receiving member 2 is visually observed, and the layer with the specific color is exposed. By checking, the replacement time of the impact receiving member 2, that is, the life can be easily understood.

  The impact receiving member 2 used for the fender 1 of the present invention is not particularly limited as long as it has a plurality of layers and has different colors. For example, the layers of the impact receiving member 2 may be different colors by adding colors, or the outermost layer may not be added, and only the layers inside the layer that needs to be replaced may be added. Further, each layer of the impact receiving member 2 may be formed of different resins, and if the color difference of each layer is known depending on the material color of these resins, it is not necessary to add color to these resins.

  The impact receiving member can be manufactured, for example, as shown in FIGS. That is, the powder material of the desired resin and the dye A are mixed and then charged into the mold 7 (FIG. 2). Next, a resin powder material and a dye B different from the dye A are mixed and then charged into the mold 7 (FIG. 3). Thereafter, these are heated and pressed by a press to be molded and bonded (FIG. 4). Finally, the mold 7 is removed from these, and the impact receiving member 2 is completed (FIG. 5).

  In the fender according to the present invention, the shearing load generated between the hull and the fender due to waves or loading of cargo while the ship is moored on the quay, It is preferable to form by using. Therefore, it is preferable to use a plastic material having high wear resistance and impact resistance, such as ultra high molecular weight polyethylene, as the resin constituting the impact receiving member used in the fender according to the present invention. Ultra high molecular weight polyethylene has an average molecular weight of 1,000,000 to 5,000,000 and is extremely large compared to the molecular weight of general high-density polyethylene, and is therefore a material that is particularly excellent in wear resistance, impact resistance, and self-lubricating properties. .

  The impact receiving member is provided on at least a part of the outer surface of the rubber fender, and the range thereof is not particularly limited. However, when a thin and large area receiving plate is used, it may be broken when the ship touches, so the size should be selected in advance according to the energy (size) of the ship on the shore. .

  Examples of the material constituting the rubber fender used in the fender of the present invention include natural rubber (NR), styrene / butadiene rubber (SBR), butyl rubber (BR), chloroprene rubber (CR), ethylene / propylene Examples thereof include rubber compositions containing an original copolymer rubber (EPDM) and the like. In addition to the vulcanization accelerator, the rubber composition may contain a filler such as carbon black, silica, clay, an anti-aging agent, a processing aid, a softening agent, and the like as necessary.

  As shown in FIG. 1, the fender 1 of the present invention is preferably manufactured by integrating the rubber fender 3 and the impact receiving member 2 by vulcanization. In this way, the fender produced by integrating the rubber fender 3 and the impact receiving member 2 by vulcanization does not use a fixing member, so there is a risk of damage to the hull due to the fixing member. The entire thickness of the impact receiving member 2 can be used.

  Prior to the vulcanization, the contact surface of the rubber fender with the receiving member and the contact surface of the receiving member with the rubber fender may be roughened with a buff or canvas. preferable.

  Further, as shown in FIG. 6, the fender according to the present invention integrates the rubber fender 3 and the receiving member 2 with a fixing member 5, and the upper surface 10 of the fixing member 5 is the receiving material. It is preferable that the lowermost layer 8 is constructed and manufactured so as to be positioned below the upper surface 11 of the lowermost layer 8. By manufacturing the fender 1 of the present invention as described above, the lowermost layer 8 is exposed after the upper layer 9 of the receiving member is worn, so that the head of the fixing member 5 is received by the receiving member. Since the time of replacement of the impact receiving member 2 is known before being exposed to the surface of 2, the deterioration of the fixing member 5 and the damage to the hull due to the contact between the fixing member 5 and the hull can be prevented. Further, the fender 1 of the present invention is worn when the rubber fender 3 and the impact receiving member 2 are integrated by the fixing member 5 when the life of the impact receiving member 2 is confirmed. If only the impact receiving member 2 is replaced with a new impact receiving member, it can be further used, which is economically superior. Here, a bolt etc. are mentioned as said fixing member.

  Further, in order to firmly fix the rubber fender 3 and the impact receiving member 2, a female screw for fixing a bolt is engraved in the rubber fender 3 as shown in FIG. A plate 6 is preferably provided. The material and thickness of the plate 6 are not particularly limited as long as the rubber fender 3 and the impact receiving member 2 can be firmly fixed. Examples of the material include a steel plate and a resin plate.

Sectional drawing of one embodiment of the fender of this invention is shown. An example of the manufacturing method of the impact receiving member of this invention is shown. An example of the manufacturing method of the impact receiving member of this invention is shown. An example of the manufacturing method of the impact receiving member of this invention is shown. An example of the manufacturing method of the impact receiving member of this invention is shown. Sectional drawing of the other embodiment of the fender of this invention is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fender 2 Receiving member 3 Rubber fender 4 Bolt hole 5 Bolt 6 Plate 7 Mold 8 Upper layer of receiving member 9 Lower layer of receiving member 10 Upper surface of bolt 5 11 Upper surface of lowermost layer of receiving member

Claims (3)

In a fender that comprises a rubber fender and a receiving member provided on at least a part of the outer surface of the rubber fender,
The fender having a plurality of layers, and each layer has a different color.   The method for producing a fender according to claim 1, wherein the rubber fender and the impact receiving member are integrated by vulcanization.   The rubber fender and the receiving member are integrated by a fixing member, and the upper surface of the fixing member is configured to be positioned below the upper surface of the lowermost layer of the receiving member. The manufacturing method of the fender as described in any one of.

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